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Method for preparing modified titanium dioxide nanotube dye-sensitized photoanode thin film

A technology of titanium dioxide and dye sensitization, applied in the field of dye-sensitized solar cells, can solve the problems of high energy consumption and difficult performance of solar cells, and achieve the effects of increasing open circuit voltage, increasing electron transfer rate, and enhancing binding force.

Inactive Publication Date: 2011-07-13
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they are still not widely used. The reasons include that the performance of solar cells themselves is difficult to match with traditional fossil energy power generation technology at this stage; silicon solar cell manufacturing itself is an energy-intensive industry

Method used

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  • Method for preparing modified titanium dioxide nanotube dye-sensitized photoanode thin film

Examples

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example 1

[0026] (1) Weigh 0.7612g of thiourea and add it to a 50ml beaker, dissolve it in 10ml of ethanol aqueous solution with a volume ratio of 1:1, add 5ml of 4M titanium tetrachloride hydrochloric acid solution dropwise into the thiourea solution, and stir for 1 hour , aged for 24 hours to obtain titanium dioxide sol A doped with S and N elements;

[0027] (2) Titanium dioxide nanotubes were prepared by hydrothermal synthesis. Weigh 6g of commercially available titanium dioxide P-25, add it to a 15M sodium hydroxide solution and stir for 24 hours. Put the suspension into a polytetrafluoroethylene-lined stainless steel reaction kettle, and place it in an oven at 60°C for 96 hours to react. The white solid product was obtained by centrifugation, and washed with deionized water until neutral (PH=7). The water-washed product was added to 0.1M hydrochloric acid and stirred for 10 hours, and finally washed with deionized water until neutral (PH=7), washed with absolute ethanol three ti...

example 2

[0033] (1) The tetrabutylammonium of weighing 0.7612g joins in the beaker of 50ml, dissolves in the ethanol aqueous solution of 10ml volume ratio 1: 1, 5ml 4M propoxy titanium alkoxide solution is added dropwise in the tetrabutylammonium solution, Stir for 1 hour and age for 24 hours to obtain titanium dioxide sol A doped with C and N elements;

[0034] (2) Titanium dioxide nanotubes were prepared by hydrothermal synthesis. Weigh 6g of commercially available titanium dioxide P-25, add it to a 7M sodium hydroxide solution and stir for 24 hours. Put the suspension into a polytetrafluoroethylene-lined stainless steel reaction kettle, and place it in an oven at 90°C for 92 hours to react. The white solid product was obtained by centrifugation, and washed with deionized water until neutral (PH=7). The water-washed product was added to 0.1M hydrochloric acid and stirred for 9 hours, and finally washed with deionized water until neutral (PH=7), washed with absolute ethanol three ti...

example 3

[0040] (1) Take 10ml of tetrabutyl titanate solution in a beaker, add 10ml of absolute ethanol to it, and finally 2ml of 0.5M tin chloride solution, the molar ratio of titanium salt to tin salt is 20:1, stir for 2 hours, and age After 24h, Sn-doped titania sol A was obtained.

[0041] (2) Titanium dioxide nanotubes were prepared by hydrothermal synthesis. Weigh 6g of commercially available titanium dioxide P-25, add it to a 15M sodium hydroxide solution and stir for 24 hours. Put the suspension into a polytetrafluoroethylene-lined stainless steel reaction kettle, and place it in an oven at 120°C for 90 hours to react. The white solid product was obtained by centrifugation, and washed with deionized water until neutral (PH=7). The water-washed product was added to 0.1M hydrochloric acid and stirred for 6 hours, and finally washed with deionized water until neutral (PH=7), washed 3 times with absolute ethanol, centrifuged, and dried at 70°C to obtain titanium dioxide nanotubes...

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Abstract

The invention discloses a method for preparing a modified titanium dioxide nanotube dye-sensitized photoanode thin film, and belongs to the field of dye-sensitized solar cells. The method comprises the following steps of: mixing titanium salt solution and a dopant to prepare doped titanium dioxide sol A; preparing titanium dioxide nanotubes by a hydrothermal synthesis method; dipping the titanium dioxide nanotubes in metal or non-metal dopant solution to obtain titanium dioxide nanotube powder B; mixing the powder B and the sol A and fully grinding to obtain titanium dioxide nanocrystalline slurry C; coating the sol A onto a conductive substrate and drying; coating the obtained nanocrystalline slurry C onto the conductive substrate on which the sol A is coated to obtain a titanium dioxide nanotube thin film electrode D; drying the D and performing thermal treatment to obtain a doped titanium dioxide nanotube nanocrystalline thin film electrode E; and soaking the E in ethanol solution of 4,4'-dicarboxylic bipyridyl ruthenium, washing with absolute ethanol and drying with nitrogen gas. The method has the advantages of simple preparation process, high repeatability and low cost.

Description

technical field [0001] The invention belongs to the field of dye-sensitized solar cells, in particular to a method for preparing a titanium dioxide nanotube-based metal and non-metal doped low-energy-gap nanocrystalline semiconductor photoanode and its application in dye-sensitized solar cells. Background technique [0002] In the world's energy structure, primary petrochemical energy such as oil, natural gas, and coal occupies a dominant position. With the sharp reduction of petrochemical energy and the increasingly serious environmental pollution, it is imminent to develop clean and renewable energy. Solar energy is an inexhaustible, inexhaustible, non-polluting, cheap energy that can be freely utilized by human beings. Compared with wind energy and water energy, solar energy is not restricted by geographical conditions and can be used on a large scale. [0003] As the most ideal energy source, solar cell utilization technology has been valued and utilized by more and mor...

Claims

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Application Information

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IPC IPC(8): H01G9/042H01G9/20H01M14/00H01L51/48
CPCY02E10/542Y02E10/50Y02E10/549Y02P70/50
Inventor 张敬畅韩志跃王斯琪杨秀英曹维良
Owner BEIJING UNIV OF CHEM TECH
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